91 lines
2.7 KiB
Lua
91 lines
2.7 KiB
Lua
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local time_scale = ...
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-- The growing ABM
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function biome_lib.check_surface(name, nodes)
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if not nodes then return true end
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if type(nodes) == "string" then return nodes == name end
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if nodes.set and nodes[name] then
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return true
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else
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for _, n in ipairs(nodes) do
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if name == n then return true end
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end
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end
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return false
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end
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function biome_lib:grow_plants(opts)
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local options = opts
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options.height_limit = options.height_limit or 5
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options.ground_nodes = options.ground_nodes or { "default:dirt_with_grass" }
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options.grow_nodes = options.grow_nodes or { "default:dirt_with_grass" }
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options.seed_diff = options.seed_diff or 0
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local n
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if type(options.grow_plant) == "table" then
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n = "multi: "..options.grow_plant[1]..", ..."
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else
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n = options.grow_plant
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end
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options.label = options.label or "biome_lib grow_plants(): "..n
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if options.grow_delay*time_scale >= 1 then
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options.interval = options.grow_delay*time_scale
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else
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options.interval = 1
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end
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minetest.register_abm({
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nodenames = { options.grow_plant },
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interval = options.interval,
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chance = options.grow_chance,
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label = options.label,
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action = function(pos, node, active_object_count, active_object_count_wider)
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local p_top = {x=pos.x, y=pos.y+1, z=pos.z}
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local p_bot = {x=pos.x, y=pos.y-1, z=pos.z}
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local n_top = minetest.get_node(p_top)
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local n_bot = minetest.get_node(p_bot)
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local root_node = minetest.get_node({x=pos.x, y=pos.y-options.height_limit, z=pos.z})
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local walldir = nil
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if options.need_wall and options.verticals_list then
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walldir = biome_lib:find_adjacent_wall(p_top, options.verticals_list, options.choose_random_wall)
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end
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if (n_top.name == "air" or n_top.name == "default:snow")
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and (not options.need_wall or (options.need_wall and walldir)) then
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if options.grow_vertically and walldir then
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if biome_lib:search_downward(pos, options.height_limit, options.ground_nodes) then
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minetest.swap_node(p_top, { name = options.grow_plant, param2 = walldir})
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end
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elseif biome_lib.check_surface(n_bot.name, options.grow_nodes) then
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if not options.grow_result and not options.grow_function then
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minetest.swap_node(pos, biome_lib.air)
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else
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biome_lib:replace_object(pos, options.grow_result, options.grow_function, options.facedir, options.seed_diff)
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end
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end
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end
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end
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})
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end
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-- spawn_tree() on generate is routed through here so that other mods can hook
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-- into it.
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function biome_lib:generate_tree(pos, nodes_or_function_or_model)
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minetest.spawn_tree(pos, nodes_or_function_or_model)
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end
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-- and this one's for the call used in the growing code
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function biome_lib:grow_tree(pos, nodes_or_function_or_model)
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minetest.spawn_tree(pos, nodes_or_function_or_model)
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end
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